Improvement in sliding-door sheaves



MAR-K L.D'EER1NG, OF NEWYORK, N. Y.

Letters .Patent No. 87,329, dated M11/rch. 2, 1869.

VIJs/renovatingN'r- IN sunmnoo'n sHnAvns.

'm Y The Schedule referred to in 'these LetteraPatent and making part vof the Bama.

To all to whim?, these presents shall come, o'r may corbcer'n, -greeting .a

Be it known that'I, MARK L. DEERING, ofthe city of New York, in the county of New York,'and State of New York, the individual mentioned in, and whose name is subscribed to the petition for the granting of Letters Patent herein, bearing date April 1'4, 1868, and accompanying this amended specification, have invented a new and useful Improvement in Sliding- 'Door Sheaves; and I ldo hereby declare that the following isa full, clear, and exact description cf the same,vreference being had to the descriptive accompanying drawings, forming parts of this specication.

Figure 1 isalongitudinal sectional elevation of those parts-of the sliding-door sheave, which are necessary to illustrate myinvention.

V' Figure 2 isa longitudinal transverse section. of the same.

Similar letters of reference indicate corresponding parts in the several figures.

My invention consists in certain means of adjusting, levelling, fitting, and setting sliding doors, whereby lthe sliding-door sheaves heretofore used, are greatly im-l proved, andnbymeans of said improvement are more eicient, and are the means of greatly reducing the labor attendant upon levelling, fitting, and settingsliding doors, and may be set at any angle, or properly levelled, without the aid of a carpenter, after having been put up,-without danger of running off the track.

To enable othersskilled in the art to make and use my invention, I hereby proceed to describe its construc- `tion and operation.

D is a wheel, with a groove cut or'cast into it. A.` Ajs an iron frame, in which the said wheel rotates upon an axis, G.

. The said frame is attached to another frame, E E, by means of a pivot, F, upon which the frame A'A can oscillate.

" H H are the flanges of the frame E E, by means of which the said sheave is secured to the door, by screws l' inserted through the' holes H H', fig. 2.

l B is a screw running through the front part b of the frame E E, the point c, of's'aidA screw, pressing against. i

a, the inclined plane which forms part ofthe flame A A. e is a spiral spring, iitting into that part of the frame E Emarked d, and is intended 4to keep the inclined planea up againstthe point c of the'screw B.

The said inclined plane is for the purpose of raising- -or lowering-the door when said sheave is attached, aud/ is effected by turning the screw B, by means of a screwdriver, or its equivalent, to the right or to the left.

By the employment of the frame A A, the screw B, inserted in the fame E E, the spiral spring e, and the inclined plane a, I dispense with the necessity of taking downesliding doors (after they are put up) many times before a lit can be made, and by means of the adjusting-screw B, the inclined plane a, and the pivot F, and the spring e, I can, after the door is made and put in its place, adjust, level, and square the same s perfectly, and in such a manner, as to entirely prevent the said sheave from running olf the track on which the wheel D runs. i

My inventionvwill, if applied, save a great amount of labor and expense in the levelling and adjusting of slid ing doors, and, in its application to such doors,will enable a person wholly unacquainted with the-business of hanging and fitting doors, to level and adjust the same with perfect accuracy and case, and any part of said door-sheave can be easily repaired or replaced, if out of repair or broken, without the necessity of obtaining a new sheave, and at very little expense. The said improvement is moreover applicable to suspended sliding doors.7

WhatI claim, and desire to secureuto myself by Letters Patent, is i The adjustable frame A A, attached to the frame E and operated by means of the inclined planea, and

.the screw B, together with the spiral spring e, or their equivalents, for the purposes hereinbeforeset forth and described.

I MARK L. DEERING. Witnesses:

J AMES H. WHITELEGGE, M. E. E. ,WHITELneGm 

